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https://hdl.handle.net/2440/45844
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Type: | Journal article |
Title: | Correlation of the highest-energy cosmic rays with nearby extragalactic objects |
Author: | Abraham, J. Abreu, P. Aglietta, M. Aguirre, I. Allard, D. Allekotte, I. Allen, J. Allison, P. Alvarez, C. Alvarez-Muniz, J. Ambrosio, M. Anchordoqui, L. Andringa, S. Anzalone, A. Aramo, C. Argiro, S. Arisaka, K. Armengaud, E. Arneodo, F. Arqueros, F. et al. |
Citation: | Science, 2007; 318(5852):938-943 |
Publisher: | Amer Assoc Advancement Science |
Issue Date: | 2007 |
ISSN: | 0036-8075 1095-9203 |
Abstract: | Using data collected at the Pierre Auger Observatory during the past 3.7 years, we demonstrated a correlation between the arrival directions of cosmic rays with energy above 6 x 1019 electron volts and the positions of active galactic nuclei (AGN) lying within 75 megaparsecs. We rejected the hypothesis of an isotropic distribution of these cosmic rays with at least a 99% confidence level from a prescribed a priori test. The correlation we observed is compatible with the hypothesis that the highest-energy particles originate from nearby extragalactic sources whose flux has not been substantially reduced by interaction with the cosmic background radiation. AGN or objects having a similar spatial distribution are possible sources. |
Keywords: | Pierre Auger Collaboration |
Description: | © 2007 American Association for the Advancement of Science |
DOI: | 10.1126/science.1151124 |
Published version: | http://dx.doi.org/10.1126/science.1151124 |
Appears in Collections: | Aurora harvest Chemistry and Physics publications |
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